References
■ Steel and Non-Ferrous Metal Symbols Chart (Excerpt) ● Classifications and Symbols of Steels
● Non-Ferrous Metals
Classification
Material
Symbol
Classification
Material
Symbol
Code Description
CxxxxP CxxxxPP CxxxxR CxxxxBD CxxxxBDS CxxxxBE CxxxxBF AxxxxP AxxxxPC
SM
Copper and copper alloys - sheets, plates and strips
Rolled Steels for welded structures
"M" for "Marine": Usually used in welded marine structures
SRB
Re-rolled Steels
"R" for "Re-rolled" and "B" for "Bar"
SS
Rolled steel for general structures
S for "Steel" and S for "Structure"
Light gauge sections for general structures SSC Steel Sheets Hot rolled mild steel sheets / plates in coil form SPH
"C" for "Cold" after SS
Copper and copper alloys - welded pipes and tubes
P for "Plate" and "H" for "Hot"
N
SGP
Carbon steel tubes for piping
"GP" for "Gas Pipe"
Carbon steel tubes for boiler and heat exchangers STB Seamless steel tubes for high-pressure gas cylinders STH Carbon steel tubes for general structures STK Carbon steel tubes for mechanical structures STKM
"T" for "Tube" and "B" for "Boiler·
Aluminum and Al alloys - Sheets, plates and strips
"H" for "High Pressure" after ST
"K" for "Kozo" ("structure" in Japanese) after ST
Aluminum and Al alloys Rods, bars, and wires AxxxxBE AxxxxBD AxxxxW Aluminum and Al alloys - Extruded shapes AxxxxS
"M" for "Machine" after STK
STKS STPA
Alloy steel tubes for structures
"S" for "Special" after STK
Alloy steel tubes for piping
"A" for "Alloy" after STP
Carbon steel tubes for pressure piping STPG Carbon steel tubes for high-temperature piping STPT Carbon steel tubes for high-pressure piping STS
"P" for "Piping" and "G" for "General" after ST
AxxxxFD AxxxxFH
Aluminum and Al alloy castings
"T" for "Temperature" after ST
"S" for "Special" after ST
Magnesium alloy sheets and plates MP
SUS-TP
Stainless steel tubes for piping
"T" for "Tube" and "P" for "Piping" after SUS
Carbon steels for mechanical structures SxxC Aluminium-chromium-molybdenum steels SACM
"C" for "Carbon"
Nickel-copper alloy sheets and plates NCuP Nickel-copper alloy rods and bars NCuB
"A" for "Al", "C" for "Cr" and "M" for "Mo"
SCM
Chromium molybdenum steels
"C" for "Cr" and "M" for "Mo"
TB
Titanium rods and bars
SCr
Chromium steels
"Cr" for "Chromium" after "S" for "Steel"
SNC
Nickel Chromium steels
"N" for "Nickel" and "C"for "Chromium"
YBsCx HBsCx
Brass castings
Nickel Chromium Molybdenum steels SNCM
"M" for "Molybdenum" in SNC
High-strength brass castings
"Mn" for "Manganese" "C" for "Chromium" in SMn
Manganese steels for mechanical structures Chromium steels
SMn SMnC
BCx
Bronze castings
SK
Carbon tool steels
"K" for "Kogu" ("tool" in Japanese)
PBCx AlBCx
Phosphorus Bronze castings
SKC SKS SKD SKT SKH SUM
Hollow drill steels
"C" for "Chisel" after SK
Aluminum bronze castings
S for "Special" after SK D for "Die" after SK T for "Tanzo" - "forging" in Japanese after SK "H" for "High speed" after SK
Alloy tool steel
AC MC
Aluminum alloy castings
High-speed tool steels
Magnesium alloy castings
Free cutting sulphuric steels
"M" for "Machinability" after SU
ZDCx ADC MDC
Zinc alloy die castings
High-carbon chromium bearing steels SUJ
"J" for "Jikuuke" ("bearing" in Japanese) after SU
Aluminum alloy die castings
SUP SUS SUH
Spring steels
"P" for "Spring" after SU
Magnesium alloy die castings
Stainless Steel
"S" for "Stainless Steel" after SU
WJ
White metals
Heat-resistant Steel
"U" for "Special Usage" and "H" for "Heat"
Aluminum alloy castings for bearings AJ Copper-lead alloy castings for bearings KJ
SUH-B SUHP
Heat-resistant steel bars
"B" for "Bar" after SUH
Heat-resistant steel sheets
"P" for "Plate" after SUH
Carbon steel forgings for general use SF Carbon steel booms and billets for forgings SFB Chromium molybdenum steel forgings SFCM Nickel Chromium Molybdenum steel forgings SFNCM
"F" for "Forging"
"B" for "Billet" after SF
"C" for "Chromium" and "M" for "Molybdenum" after SF
"N" for "Nickel" in SFCM
FC
Gray cast iron
"F" for "Ferrous" and "C" for "Casting"
Spherical graphite / Ductile cast irons FCD
"D" for "Ductile" after FC
FCMB FCMW FCMP
Blackheart malleable cast irons
"M" for "Malleable" and "B" for "Black" after FC
Whiteheart malleable cast irons
"W" for "White" after FCM
Pearlite malleable cast iron
"P" for "Pearlite" after FCM
SC
Carbon cast steels
"C" for "Casting"
SCS SCH
Cast stainless steels
"S" for "Stainless Steel" after SC
Heat-resistant cast steels
"H" for "Heat" after SC
SCMnH
High-manganese cast steels
"Mn" for "Manganese" and "H" for "High" after SC
N71
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